Calender for friction, schreiner, embossing and other services



April 5, 1960 B. D. STEWART 2,931,113

CALENDER FOR FRICTION, SCHREINER, EMBOSSING AND OTHER SERVICES Filed May 12, 1959 3 Sheets-Sheet 1 as INVENTOR. 5/206! 0. .ifnmwr April 5, 1960 a. n. STEWART CALENDER FOR FRICTION, SCHREINER, EMBOSSING AND OTHER SERVICES 3 Sheets-Sheet 2 Filed Ilay 12, 1959 INVENTOR. 190042 diff/4491?? BY M2 1% aim/@1 47 April 5, 1960 B. D. STEWART "2,931,113

CALENDER FOR FRICTION, SCI-REINER, EIIBOSSING AND OTHER SERVICES 3 Sheets-Sheet 3 Filed llay 12, 1959 INVENTOR. 590a: 0.575140??? United States Patent CALENDER FOR FRICTION, SCI-IREINER, EMBOSSING AND OTHER SERVICES Bruce D. Stewart, Denville, N.J., assignor to McKiernan- Terry Corporation, Harrison, NJ., a corporation of New Jersey Application May 12, 1959, Serial No. 812,688 2 Claims. (Cl. 38-49) The invention herein disclosed relates to calenders of the Multi-Purpose type disclosed in patent application Serial No. 471,744 filed November 29, 1954, Patent 2,865,118 December 23, 1958, in which top and bottom companion calender rolls are controlled for pressure applying purposes and are connected by a gear train which can be readily changed to convert from one type of web treatment to another.

The objects of the present invention are to improve on such machines, particularly as to simplifying construction and operation, reducing overhead and floor space required, more compact arrangement of component parts, better balance and smoothness of drive and better accessi bility of parts and conversion from one type of operation to another.

The foregoing and other desirable objects have been attained by certain novel features of construction, combinations and relations of parts, all as hereinafter set forth in detail and illustrated by way of example in the accompanying drawings. These drawings, forming part of this specification, illustrate a present commercial embodiment of the machine, but structure may be modified. and changed as regards the immediate illustration, all within the true intent and scope of the invention as hereinafter defined and claimed.

hFig. l of the drawings is a front elevation of the mac me.

Fig. 2 is a lefthand side view of the machine.

Fig. 3 is a broken vertical sectional view of the inner set of gears, on the top and bottom rolls, this view being taken on substantially the plane of line 3-3 of Fig. 2 and showing the gear of the bottom roll as canying an over-running clutch for turning the lower roll when separated from the top roll.

Fig. 4 is an elevation of the righthand side of the machine.

Fig. 5 is a broken vertical sectional view of the outer set of gears providing the connecting links between the upper and lower rolls, this view being taken on substantially the plane of line 55 of Fig. 2.

Fig. 6 is a broken detail showing the overrunning clutch unit replaced by a gear on an adapter similar to the adapter employed for mounting the clutch.

Fig. 7 is a detail view of the wrench for effecting adjustment of the eccentric gear carrying studs.

In the machine illustrated, a heated top roll 10 is mounted in fixed bearings 11, providing a rigidly supported shaft 12 to which the drive is extended from motor 13 by sprockets 14, 15 and chain 16.

The lower, filled roll 17, in this instance, is the movable roll, journalled in self-aligning bearings 18 in the ends of levers 19 fulcrumed intermediate their ends in the frame 20 on the center 21 and connected at their outer ends at 22 with the rods 23 of pistons operating in power cylinders 24. The latter are shown pivot-ally connected at the top at 25 with overstanding portions 56 of the spaced sides of the frame.

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In this manner, smooth quiet drive to the fixed roll is accomplished, unaffected by variations in alignment which might result from variable pressure applied by cylinders 24 to the opposite ends of the lower, movable roll. The self-aligning bearings for this roll permit diiferentpressures being applied to opposite ends of the lower roll and the drive to the machine is not affected by any such difference in pressure.

The power cylinders may be actuated by pneumatic steam, hydraulic or other pressure.

The top roll also may be mounted in self-aligning bearings as indicated at 65 in Fig. 3.

The bottom roll may be contact driven from. the top, power driven roll for certain purposes or be positively driven through the special set of gearing illustrated and comprising a gear 26 on the lefthand shaft extension 12 of the top roll in mesh with a first idler 27 journalled. on a stud 28 and carrying at its outer face a smaller gear 29 in mesh with a second idler 30 journall'ed on a stud 31. and carrying at its inner face a gear 32 in mesh with gear 33 on the shaft 34 of the lower, movable roll.

The stud 31 on which the lower idler gears 30, 32, are journalled is mounted in the frame on a center corresponding with the center 21 on which the levers 19, carrying the lower roll are fulcrumed so that adjustment of the lower roll will not affect the driving of roll from the upper roll.

The paired-together gears 27, 29 and 30, 32 may be assembled as shown in Fig. 5 with keys 35' fastening them on sleeves 36- supported by roller bearings 37 on the studs 28, 31, cap plates 38 secured by bolts 39 holding the parts in this relation.

To enable limited adjustment of the gear centers, the supporting studs 28 and 31 are shown in Fig. 5 as having mounting extensions 40, 41 eccentric to the portions 28 and 31 supporting the gears, and these extensions as rotatable in bushings 42, 43 fixed in the spaced plates 44 forming the sides of the frame.

By rotative adjustment of the stud extension 40, gears 27, 29 may be adjusted with respect to gears 26, 30 and 32, and similarly by rotative' adjustment of studextension 41, the gears 30, 32 may be adjusted with respect-to gears 29 and 33.

The eccentric gear supporting portions 28 and 31 are shown as of larger diameter than the spindle portions 40,. 41, mounting the same, thus providing at each stud an annular shoulder 45. Abutment flanges or washers 46 are shown interposed between these shoulders and the inner frame bushings 42, 43 and caps 47 are shownbol'ted at 48 to the outer ends of spindles 40, 41 bearing against the exposed ends of the outer bushings 42, 43. By tightening these bolts, the spindles may be drawn outwardly to bind and hold them fast between the mounting bushings 42, 43, thus to secure the eccentric studs in their positions of adjustment. In a preferred arrangement, three securing bolts 48 are provided arranged in triangular relation and rotary adjustment is effected by use of a long handled Wrench having corresponding three openings engageable over the bolt heads. After loosening the bolts, this wrench may be applied over the heads of such bolts to turn the shafts or spindles 40, 41 and after desired adjustment is effected, the bolts may again be tightened to secure the spindles and hence, the gears carried thereby in desired adjusted relation.

To keep the lower roll turning when separated from the upper roll, a free wheeling one-way drive clutch is shown at 49 mounted on the lower roll shaft 34 and connected to gear 33 driving that shaft. This may be a conventional overrunning clutch such as the one now available on the market under the name Formsprag.

It is shown as carried by an adapter stud 50 removably secured by bolts 51 to the end of the roll shaft 34 and as having the driven side of the same secured to gear 33 by bolts 52 and as having the driving side of the same coupled at, 53 to stud 50 which is bolted to the shaft.

This overrunning or free wheeling clutch is faced to rotate the lower roll in the same direction in which it is contact driven from the upper roll, thus by free wheeling action to permit accurate contact drive from the upper roll and to rotate the lower roll at synchronous speed when separated from the upper roll.

Under some circumstances, the overrunning clutch may not be required or may not be desired. In those circumstances, the clutch unit may be taken off by removing bolts 51 and separating the adapter 50 from the end of the roll shaft. Then these parts may be replaced by a second adapter 50a of generally similar construction, Fig. 6 carrying the same or a substitute gear 33 for the lower roll.

By mounting the upper, steel roll in fixed bearings and driving that roll and mounting the lower, companion, filled roll in independently pressure controlled lever arms, driven by contact or gear train from the upper roll, smooth, quiet, vibrationless operation is effected regardless of equal or varying pressure applied at the opposite ends of the rolls. The gears constituting the drive connection from the top to the bottom roll can be set by slight rotative adjustments of the eccentric gear mounting studs 28 and 31 to maintain quiet, smooth operation, and these adjustments can be so slight as not to disturb the continuity of the drive train regardless of adjustments of the lower roll toward and away from the fixed top roll.

While ordinarily the same set of gears may be used for the different operations performed by the machine, any of these gears, when necessary, may be quickly changed to suit different driving requirements.

This is particularly true of the gear 33 for the lower roll. The adapter 50 which mounts this gear on the end of the lower roll shaft may be quickly attached to or be removed from the shaft, enabling direct gear drive as in Fig. 6 or drive through the free wheeling clutch 49 as in Fig. 3. Using the free wheeling clutch, the lower roll will be friction driven on contact with the upper roll but when separated therefrom, will be rotated in substantial synchronism with the upper roll to'avoid scufiing or overheating of portions of the lower roll on return to contact engagement.

In Fig. 7, the wrench for adjusting the gear carrying studs is shown as having a flat head portion 54 with circular, oversize openings 55 positioned to pass over the heads of the bolts 48 so that these bolts may be reached for loosening or tightening while the wrench is in place, thus enabling fine adjustments to be made and the parts to be secured in such relation.

The two roll machine shown is made up of few, rugged parts compactly arranged so as to require a minimum of space vertically as well as horizontally and while relatively simple in design, is adapted to perform such different operations as frictioning, glazing, rolling, schreinering, embossing and the like.

While for general purposes it may be considered best to employ the six gear drive train illustrated, divided into an inner set of two gears on the rolls and four gears as the idlers, it is contemplated that these may be combined into a single set of four direct engaging gears.

The overdrive free wheeling clutch connecting the final gear with the lower roll is of advantage in overcoming or compensating for any slight misalignment or other inaccuracies.

What is claimed is:

1. A calender for web materials, comprising a frame, a top roll journalled in fixed bearings insaid frame, levers fulcrumed intermediate their ends in said frame below said top roll, a bottom roll journalled in the inner ends of said lovers in opposition to said top roll, power cylinders pivotally supported on the frame and having pistons pivotally connected with the outer ends of said levers, a motor, drive connections extending from said motor to one end of said stationary mounted top roll, and a geartrain extending from the opposite end of said top roll to said bottom roll, including an idler gear journalled substantially on the fulcrum axis of said levers, and a final gear and overdrive free wheeling clutch connected with said bottom roll.

2. A calender for web materials, comprising a frame, a toproll journalled in fixed bearings in said frame, levers fulcrumed intermediate their ends in said frame below said top roll, a bottom roll journalled in the inner ends of said levers in opposition to said top roll, power cylinders pivotally supported on the frame and having pistons pivotally connected with the outer ends of said levers, a motor, drive connections extending from said motor to one end of said stationary mounted top roll, and a gear train extending from the opposite end of said top roll to said bottom roll, including an idler gear journalled substantially on the fulcrum axis of said levers, and self-aligning bearings supporting the opposite ends of said bottom roll in said levers, and said gearing further including a final gear and anoverdrive free wheeling clutch connecting said final gear with said bottom roll.

Rose Mar. 27, 1956 Stewart Dec. 23, 1958 

